/**
 * HostFacade factory.
 *
 * Creates a HostFacade that bridges host and product via a Transport.
 * Each handler method translates between the versioned wire format
 * (v1 tagged enums with Ok/Err results) and plain TypeScript types.
 *
 * Ported from triangle-js-sdks host-container/createHostFacade.ts,
 * simplified to use plain Result objects instead of neverthrow.
 */
import type { Messaging } from "../shared/transport/provider.js";
import type { HostFacade } from "./types.js";
export type CreateHostFacadeOptions = {
    /** How the host communicates with the product. */
    messaging: Messaging;
    /**
     * Whether to allow the product to upgrade the codec after handshake.
     * When `true` (the default), the host registers a codec upgrade handler
     * that negotiates structured clone as the preferred format.
     */
    allowCodecUpgrade?: boolean;
};
export declare function createHostFacade(options: CreateHostFacadeOptions): HostFacade;
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